Hello,
I would think 1 regulator is evaporated, and also 2 mid sized caps. So chain of events are: Capacitor failing, exploded, regulator failed, heating and explode the area?
I keep wondering how it can get so much energy to evaporate that much area. The left over are black hardened gel (?) Hard to describe, on the heat sink.
Would anyone have a high-res picture of that area? Front side and backside? Im still considering whether I have enough experience to fix something like this.
Thanks everyone,
Ben
I would think 1 regulator is evaporated, and also 2 mid sized caps. So chain of events are: Capacitor failing, exploded, regulator failed, heating and explode the area?
I keep wondering how it can get so much energy to evaporate that much area. The left over are black hardened gel (?) Hard to describe, on the heat sink.
Would anyone have a high-res picture of that area? Front side and backside? Im still considering whether I have enough experience to fix something like this.
Thanks everyone,
Ben
The 3555 hole is from the rails. The rails go right through there on traces to the regulators. The bars take power over the top for the amp, but the traces burn to each other and roast the board there. The transistors start it for whatever reason, the caps were fine in mine. Most small caps blow and nothing much is left.
ALPINE 3554 REPAIR
Hello All,
I'm replacing ps transistors in an old school alpine 3554, and having problems locating enough of the original SANKEN d1065 units. I actually have 4 of these amps.
Can anyone suggest a source for the D1065 transistors, or maybe a close match substitution. I was looking at the Fairchild KSC5047TU as replacements. Will these work? Do I need to change the resistor values?
Any and all comments are welcome. I'm trying to put together an oldschool/new school SQL system using the ALPINES, and maybe a PUNCH 1000. Also considering a D-Class amp on subs.
Hello All,
I'm replacing ps transistors in an old school alpine 3554, and having problems locating enough of the original SANKEN d1065 units. I actually have 4 of these amps.
Can anyone suggest a source for the D1065 transistors, or maybe a close match substitution. I was looking at the Fairchild KSC5047TU as replacements. Will these work? Do I need to change the resistor values?
Any and all comments are welcome. I'm trying to put together an oldschool/new school SQL system using the ALPINES, and maybe a PUNCH 1000. Also considering a D-Class amp on subs.
15pcs 2SD1065 Original Pulled Sanyo NPN Silicon Epitaxial Transistor D1065 | eBay
There quite a few of the D1065 on ebay.
There quite a few of the D1065 on ebay.
The 3055 is likely too slow. The following part (Mouser) may work:
512-FJA13009TU
You should be aware that there is a significant problem with counterfeit parts on eBay. When you find a supplier with a large stock of NOS parts or new parts for a transistor that was discontinued 10+ years ago, you should be suspicious.
512-FJA13009TU
You should be aware that there is a significant problem with counterfeit parts on eBay. When you find a supplier with a large stock of NOS parts or new parts for a transistor that was discontinued 10+ years ago, you should be suspicious.
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